Roll adjusting mechanism



7 Nov. 2, 1948. F. R.V VHITC OMB 2,452,976

ROLL ADJUSTING MECHANISM Filed Feb. 26. 1947 2 Sheets-Sheet 1 IN V EN TOR.

v .Frregf B mr'ianzb F. R. WHITCOMB I ROLL ADJUSTING MECHANISM Nov. 2, 1948.

'2 Shqets-Sheet 2 Filed Feb. 26, 1947 ez wmw Patented Nov. 2, 1948 ROLIieADJUSTING MECHANISM.

Forrest RWWliitcomb; Worcester; Mass.

AmrlicatiomEebruary-m6, 1947; Serial :No: 7.31 147 r 5 Claims. l L

This. inventionrelates to machinesior. glazing a knife .;blades andeothea metal productsm In such machines :the.lworklisivertically reciprocatedabe-w tweema; ir-ofipolishing rolls which are mounted to'rswing..horizontallyltoward and-away f'rom-lthe :1' work'..aIf the iworkablade :iS :of uniform transverse thickness, .thelapolishing..gsurfaoes ;-of 1 lithe: rolls." should-.beaparallel lbutnif thelolade is of-tapereda transit-arse;.sectionmhe adjacent-surfaces of the rolls shouldibeeatea corresponding .slight angle, 10

For such tapered work, one cylindrical rolleandt one slightlyitaperedrrolhare eommonly provided, but the angle between the polishing surfaces does not always correspond exactly'to the taper of the blade section.

Itis the"general object of my invention to provide means by which the angular relation between the axes of stato -substantially paralled polishing rolls maybe altered to such extent as is necessary toicauseethaadjacent roll SUIfaCBSYtO provide-anc inch dedflangleexactly correspondingrto the. cross-4: section of the blade'or other workto be glazed or polished.

A further object is to provide for such relative adjustment without interference with the usual swinging movements of the rolls or with the continued rotation thereof.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a top plan view of a pair of polishing rolls.

Fig. 2 is an enlarged partial front elevation, looking in the direction of the arrow 2 in Fig. 1.

Fig. 3 is an end view, looking in the direction of the arrow 3 in Fig. 2; and 'Fig. 4 is an enlarged sectional detail, taken along the line 4--4 in Fig. 3.

Referring to Fig. 1, I have shown a piece of work W positioned between a cylindrical roll -R and a slightly tapered roll R. The roll R rotates in self aligning anti-friction or ball bearings "I0 and I I, mounted at the upper ends of arms I2, which in turn are keyed to a rock shaft I4.(Fig. 3). The roll R is similarly rotated in self-aligning anti-friction or ball bearings 20 and 2| (Fig. 1), and the bearing 20 is mounted in an arm 22 5? which is keyed to a second rock shaft 24 (Fig. 3).

The second bearing 2| for the tapered r011 R is mounted in an arm 30 which is centered on the shaft 24 but is free for angular adjustment relative thereto. A short arm 34 is keyed to the shaft 2 j. 24 andii's v.madef fast .thereto by a clamping .screw 35;

The connecting devices through. which theQan gularqrelationshiplofthelarms .30 and. mayrbef varied willllnow be. described; A... swivel .nut Q4 01-. (Fig. 4) is provided with a shank M1 which -15-- pivoted in. a bearing in the. arm 3E! andwhich'is securedthereini bya collar. 42.... A :swivel. bearing is.similarlyprovidedwitha shank Afifextendingmg. througha bearing ,in. the short arm.34. .and.is :Se: curedthereinbya oollarAl;

A .headedadjustmg screw -5il-extends through; the. swivel (bearing ..45 and is .threadedainto. the swivelhut. ,I 4.? i The screw 150.15 rrotatable, in then-1 swiveLbearing Msbut iS-thld from longitudinal displacement. .thereirrlby. a collar. .5 I A .set sorewr is .thr'eadedJnJthe swivel bearingshank 46 and. .l. engagestnthe. bearing-cportion of. the adjusting... screw 50.

A .coil. spring .50 is :mounted. between. opposed.

I surfiaesnr .abutmen-ts 6 hand 62: .dmthe arms...

and 351', and acts to take up lost motion between these parts by forcing th'em yieldingly apart.

The limit of approach of the rolls to each other may be determined by an adjusting screw III (Fig. 1) mounted on a member II keyed to the shaft 24. The screw III has a head I2 engaging a stud I3 fixed in a similar arm 14 keyed to the shaft II. Engagement of the parts 12 and I3 limits the approach of the rolls to each other, and this approach may be varied by changing the setting of the screw I0.

During the operation of the machine, the shafts I4 and are rocked by any usual power means to cause the rolls R and R to alternately approach and recede relative to each other.

In order to adjust the angle between the polishing surfaces, the set-screw 55 is loosened and the adjusting screw 5!! is turned in one direction or the other to change the angle between the arm 34 which is fixed to the rock shaft 24 and the arm 30 which is loose on said shaft and supports the roll bearing 2|. By such adjustment the self-aligning bearing 2| of the roll R may be shifted toward or away from the shaft I I and roll R, while the bearing 20 of the roll R remains unchanged in position, except for a very slight self-aligning swivel movement.

The roll R. may be cylindrical instead of slightly tapered, or both rolls may be slightly tapered, all within the scope of my invention.

I have thus provided a very simple, durable and efficient mechanism by which the angular r'elation of the adjacent active surfaces of the rolls R and R may be adjusted to the exact transverse section of the work, while at the same time the bearings of the roll R automatically maintain their alignment and there is no interference with continuous rotation of the rolls.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. In a glazing and polishing machine, a pair of coacting polishing rolls, self-aligning bearings for said rolls, supporting arms for said bearings,

rock shafts on which said supporting arms are mounted for movement by said rock shafts toward and away from each other, and separate means to shift one of said arms and bearings angularly relative to the rock shaft on which it is mounted to change the axial relation of said rolls toeach other.

2. The combination in a glazing and polishing machine as set forth in claim 2, in which the shiftable supporting arm is loose on its rock shaft and in which an adjacent short arm is fixed to said rock shaft and in which a screw-threaded member connects said adjacent arms and is effective to change the angular relation of said arms to each other. v p

3. In a glazing and polishing machine, a pair of coacting polishing rolls, self-aligning bearings for said rolls, supporting arms for said bearings,

a rock shaft to which the supporting arms for one roll are fixed, a second rock shaft to which one of the supporting arms for the second roll is fixed and on which the second supporting arm for said second roll is pivoted, a short arm fixed to said second rock shaft adjacent said second supporting arm, means to shift said second supporting arm angularly relative to said short arm, and means to secure said parts in a selected angular relation.

4. In a glazing and polishing machine, a pair of coacting polishing rolls, self-aligning bearings for said rolls, supporting arms for said bearings, a rock shaft to which the supporting arms for one roll are fixed, a second rock shaft to which one of the supporting arms for the second roll is fixed and on which the second supporting arm for said second roll is pivoted, a short arm fixed to said second rock shaft adjacent said second supporting arm, a nut swivelled in said second supporting arm, an adjusting screw threaded in said nut and having a bearing in a bearing block swivelled in said adjacent short arm, and means to hold said screw from axial displacement in said bearing block.

5. In a glazing and polishing machine, a pair of coacting polishing rolls, self-aligning bearings for said rolls, supporting arms for said bearings, a rock shaft to which the supporting arms for one roll are fixed, a second rock shaft to which one of the supporting arms for the second roll is fixed and on which the second supporting arm for said second roll is pivoted, a short arm fixed to said second rock shaft adjacent said second supporting arm, a nut swivelled in said second supporting arm, an adjusting screw threaded-in said nut and having a bearin in a bearing block swivelled in said adjacent short arm, means to hold said screw from axial displacement in said bearing block, means to retain said adjusting REFERENCES CIT ED The following references are of record in the file of this patent: v

UNITED STATES PATENTS Number Name Date 2,036,900 Waldron Apr. 7, 1936 2,123,171

Hamilton Q July 12, 1938 

